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Product Specifications:
| Item | Sure-Flex Sleeve |
| Angular Misalignment | 1° |
| Application | Blowers, Compressors, Conveyors, Mixers, Motors, Pumps |
| Body Style | 3JNS |
| Coupling Size | 3 |
| Features | 4-Way Flexing Action Absorbs Shock, Misalignment And End Float, Vibration |
| For Misalignment Type | Angular, Parallel |
| Horsepower @ 100 Rpm | 0.12 hp |
| Hp @ Rpm | 2.2 hp @ 1800 RPM, 4.5 hp @ 3600 RPM |
| Hp Rating @ 100 Rpm | 0.12 hp |
| Hp Rating @ 100 Rpm | 3/25 hp |
| Hp Rating @ 1200 Rpm | 1.49 |
| Hp Rating @ 1200 Rpm | 1 49/100 hp |
| Hp Rating @ 1800 Rpm | 2.2 hp |
| Hp Rating @ 1800 Rpm | 2 1/5 hp |
| Hp Rating @ 3600 Rpm | 4.5 hp |
| Hp Rating @ 3600 Rpm | 4 1/2 hp |
| Insert Construction | One Piece Split |
| Insert Design | One-Piece Split |
| Insert Material | Neoprene |
| Insert Width | 1" |
| Material | Neoprene |
| Max. Angular Gap Misalignment | 0.035" |
| Max. Angular Misalignment | 1° |
| Max. Parallel Misalignment | 0.01" |
| Max. Speed | 9200 RPM |
| Maximum Operating Temperature | 200°F |
| Minimum Operating Temperature | 0°F |
| Operating Temp. | 0°F to +200°F |
| Outside Dia. | 1 7/8" |
| Parallel Misalignment | 0.01" |
| Rated Torque | 78 lbs.-in. |
| Resistance Properties | Chemical Resistant, Oil Resistant |
| System Of Measurement | Imperial |
| Torsional Stiffness | 229 lbs.-in./deg. |
| Width | 1" |
Shipping Info:
| Ship weight (kg) | 0.05 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 6.86 |
| Ship width (cm) | 6.6 |
| HS code | 8483608000 |
| Country of Origin | US |
Product Details:
- TB Wood's 3JNS coupling sleeve insert designed for torque transmission and accommodating shaft misalignment in pumps, compressors, mixers and conveyors
- Exceptional torsional flexibility incorporated with 4 way flexing action for absorbing shock, vibration & end float
- One-piece, split neoprene construction provides resistance against wear for high-torque applications
- ATEX compliant
Product Variants
| Model | Max. Speed | Rated Torque | Coupling Size | Insert Material | Torsional Stiffness | Angular Misalignment | Parallel Misalignment | Outside Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| 4JNS | 7600 RPM | 156 lbs.-in. | 4 | Neoprene | 458 lbs.-in./deg. | 1° | 0.01" | 2.312" | €31.79 | |
| 5JNS | 7600 RPM | 312 lbs.-in. | 5 | Neoprene | 916 lbs.-in./deg. | 1° | 0.015" | 2.938" | €39.18 | |
| 6JNS | 6000 RPM | 585 lbs.-in. | 6 | Neoprene | 1718 lbs.-in./deg. | 1° | 0.015" | - | €77.82 | |
| 3J | 9200 RPM | 78 lbs.-in. | 3 | EPDM | 229 lbs.-in./deg. | 1° | 0.01" | 1 7/8" | €10.28 | |
| 4J | 7600 RPM | 156 lbs.-in. | 4 | EPDM | 458 lbs.-in./deg. | 1° | 0.01" | 2.312" | €20.33 | |
| 5J | 7600 RPM | 312 lbs.-in. | 5 | EPDM | 916 lbs.-in./deg. | 1° | 0.015" | 2.938" | €40.93 | |
| 6J | 6000 RPM | 585 lbs.-in. | 6 | EPDM | 1718 lbs.-in./deg. | 1° | 0.015" | - | €66.22 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
TB WOODS 3JNS Sure-Flex Plus Coupling Sleeve Insert, Neoprene, Size 3
€25.35 /unit

